Insulation of electric wires



No. 608,906. n Patented Aug. 9, |898.

, 1 i1.' A. PocH.

(Appliestion Mad .hun 89, 1896.)

(No Nudel.)

fvenor.

UZ P0 c UNITED STATES PATENT Ormes.

JOSEPH A. POCII, OF NEIV ORLEANS, LOUISIANA.

INSULATION OF ELECTRIC WIRESu SPECIFICATION forming part of LettersPatent No. 608,906, dated August 9, 1898.

pplication filed (Inno 22, 1898.

To @ZZ whom t may concern:

Be it known that I, JOSEPH A. POCII, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented new and useful Improvements in Insulation ofTires Garrying Electric Currents of IIigh Potential, of which thefollowing is a specification.

My invention relates to means for the insulation of wires carryingelectric currents of high potential. It is my object to provide meansfor this purpose specially adapted for leading such wires through wallsor partitions or any similar structures where the conductors are broughtinto close proximity with material that may be either combustible orcapable in some degree of conduction, or both.

My invention is particularly adapted to the conductors used inconnection with such generators as the X/ Vimshurst influence-inachineor the Holz, the tension in the former frequently being maintained at apoint where it would break through any of the known forms of insulationwith ease.

My invention consists of the several novel features of construction andnew combinations of parts hereinafter fully explained and thenparticularly pointed out and defined in the claims.

Referring to the accompanying drawing, showing my invention, the figureis a sectional View representing a wall insulation in which my inventionis embodied.

The reference-numeral 1 in said drawing designates an electricalconductorsuch, for example, as the prime conductor upon any ordinaryform of influence-machine. This conductor is shown as being carriedthrough a wall or partition 2.

Immediately surrounding the wire l is a sleeve or tube 8, of hardrubber, of such length as to extend for some distance upon each side ofthe partition 2. At one end the sleeve is provided with an enlargement4, against which rests a washer, or collar 5, also of hard rubber.

The numeral 5 indicates a washer similar to the washer 5, which isslipped upon the conductor Aincasing sleeve 3. Loosely surrounding vtheconductor and its incasing sleeve and arranged between the washers 5 and5' is a heavy glass tube G. A nut 7 is in Serial No. 684,15 5. (Nomodel.)

screw-threaded engagement with the threaded extremity of the hard-rubbersleeve 3, and the function of this nut is to firmly press the oppositeends of hollow truncated concs S 9 against the partition 2 and thewashers 5 and 5, thus retaining the conductor 1 firmly in a position inthe center of the aperture in the partition and out of all possiblecontact with the walls of said aperture and securely insulated from allpossible leakage.

In the bases of the cones 8 9 I secure by suitable rings S and 9soft-rubber gaskets l0, which when the parts are assembled and compactedby the nut 7 are compressed between the edges of thc cones S E) and thepartition and form air and water tight connections between said conesand the partition. I prefer also to arrange rubber gaskets 10 betweenthe washers 5 and 5 and the ends of the truncated cones for a similarpurpose.

By this method of insulation the truncated cones which are caused tobind upon each side of the partition hold the wire or conductorY l andits inclosing tube 3 centrally and away lfrom the material composing thcwall. Moreover, to endanger the latter it would be necessary for thecurrent to break through the insulation or to jump from the extreme endof the tube 3' back to the wall. The employment of this insulation uponthe ordinary iniiuence-machine has increased the sparking dist-ance fromthe radius of the disk to two-thirds of its diameter, showing that alarge loss by leakage has been eifectually avoided.

"What I claim is-1 l. An insulation for conductors carrying currents ofhigh potential, consisting of a surrounding insulating-sleeve and twoinclosing glass cones, retained by a collar at one end and a nut at theother, substantially as dc scribed.

2. An insulation for high-potential circuits, composed of a surroundingtube, or tubes, two truncated glass cones inclosing the same, a collarand nut to press and hold said cones together, and rubber gasketsVsecured at the bases of said cones, substantially as described.

3. An insulation for high-potential circuits, consisting of aninsulating-tube surrounding the wire and passing through a wall or paruIOO ttion, a collar at one end and a nut at the my hand in presence oftwo subscribing Witother, and two truncated glass cones placed nesses.one on eaeh side of the Wall and provided with w '1 elastic gaskets intheir bases, pressed against JOSEPH A POCHL 5 the wall by the nut toform an air and Water XVitnesses:

tight connection, substantially as described. lV. H. COOK,

In testimony whereof I have hereunto set FREDERIC COOK.

